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Can dark energy escape a black hole?

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newtonian

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Can dark energy escape a black hole?<br /><br />Related: can dark energy propagate faster than light?
 
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harmonicaman

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Dark energy is still undefined, but if there exists such a force mysteriously exerting itself on space and time, then I would submit that it wouldn't be able to escape a BH.<br /><br />If sufficient "m" (mass) can overcome "c" (time), then it would also logically follow that a BH can overcome the (theorized Dark Energy) force driving time and the infinite expansion of space...
 
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newtonian

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harmonicaman - I'm not saying you are wrong - but I will take the oppostite viewpoint for the purpose of determining which position is more tenable.<br /><br />A black hole stops light due to gravity - correct?<br /><br />Can gravity stop dark energy?<br /><br />It seems to me that the opposite is the case, that dark energy overcomes gravity!<br /><br />Otherwise, how could our universe expand from a singularity, which bears some similarity to a black hole, with its incredible gravity?<br /><br />And, of course, our universe did indeed begin to expand and appears to be accelerating in expansion - perhaps at times faster than light!<br /><br />BTW - do you believe our universe is accelerating in expansion and, if so, what do you think is causing this effect?<br /><br />BTW - if dark energy can escape a black hole, and if one day we learn to observe sources of dark energy.....
 
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harmonicaman

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<i>"Otherwise, how could our universe expand from a singularity, which bears some similarity to a black hole, with its incredible gravity?"</i><br /><br />The singularity of our origin had no mass or gravity in the beginning. Mass was created after time and space started expanding. Mass is probably debris left over from the inflation event which failed to become spacetime, or, (as Hawking describes it), left over from the matter - anti-matter annihilation during inflation.<br /><br />Obviously, time was able to leak into the singularity because gravity wasn't quick or powerful enough to capture it.<br /><br />The singularity of our origins and a BH singularity have nothing in common! BH's are simply big piles of mass within the universe and the BB singularity was an infinitely small point which contained everything which was to become our universe. At no time do BH's ever form a true singularity! <br /><br /><i>"BTW - do you believe our universe is accelerating in expansion and, if so, what do you think is causing this effect?</i><br /><br />Current observations seem to support the view that the expansion of the universe is accelerating and it will probably accelerate forever. This is likely because as the universe expands and mass becomes more diffuse, gravity is able to exert less and less resistance to time.<br /><br />Time is merely seeking its own level of expansion.
 
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dark_energy

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No, I'm just as human as you are. <img src="/images/icons/tongue.gif" /> <div class="Discussion_UserSignature"> </div>
 
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alokmohan

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Hubble was suposed to see distant supernova.To check up if supernovas are moving away.Since then Hubble lost job.We are still in dark on dark energy.
 
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newtonian

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harmonicaman - Ok, I disagree on the former point, obviously.<br /><br />To illustrate: what is the diameter of the mass at the center of a black hole?<br /><br />Does it approach the diameter of our universe at its origin?<br /><br />On the latter point, while we agree on the acceleration of expansion, we disagree on the reasons.<br /><br />Why have scientists proposed dark energy if ordinary gravity, or lack thereof, was all that was involved in the acceleration of expansion?
 
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alokmohan

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Black hole does not have diameter in the sense we use it.At singularity all lawsof our physics fail?
 
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yevaud

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In reference to your opening post.<br /><br />Seems to me that this won't be any sort of discussion, unless you can determine what Dark Energy <i>is</i>, first.<br /><br />Is it the Higgs Field? Gravity "leaking" across 11-Dimensional 'Branes? A hitherto not detected repulsive Gravitational Force?<br /><br />Define that, and then your debate will have something to work from. <div class="Discussion_UserSignature"> <p><em>Differential Diagnosis:  </em>"<strong><em>I am both amused and annoyed that you think I should be less stubborn than you are</em></strong>."<br /> </p> </div>
 
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waxy

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if i recall correctly, Stephen Hawkings took back what he said<br />about matter/energy entering a black hole and going into <br />another diminsion. He corrected himself and said that he <br />now figures that the matter would instead be mangled <br />and the black hole would emmit it as gamma energy.<br /><br />It's been quite some time sience i've been to school, but <br />in those days i was tought that gamma, radio, mico, <br />infrared, x-ray,and light were all the same thing with <br />diffrent wave lengths.<br /><br />if this is still the beleif today then how can gamma rays <br />escape a black hole when light can't?<br /><br /><br /><br /><br />
 
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plutocracy

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After the big bang, stuff started cooling. The first bits of matter/energy to form were called "type A", and they had attractive properties. Up until the 22nd century, scientists only knew of this one type of matter. They could only detect matter A, because gravitation A attracts matter A. They listed these in the old-fashioned periodic table of the elements (at a time when they mistakenly thought they could create new stable, non-isotopic matter type A, through fusion).<br /><br />Nowadays, we realize that there are other bits, B, or more accurately, B, C, and D. These bits were also present in the elementary step, but did not interact with matter A.<br /><br />Whereas Matter A forms in the relation of energy A, it was discovered that 'Matter B' only forms in the relation of energy B, and so on. This earned Hans Goldsbernandez-Washington, Ph.D., the first consecutive Nobel Prizes for the years 2111-2112.<br /><br />................................................................................ <br />........2111-discovery of matter/energy B, <br />........2112-the shuttle he built which reached <br />.................escape velocity from the amplified sound <br />.................wave created by the G-chord on an <br />.................electric guitar.<br />.................................................................................<br /><br />Therefore, to answer your historical question: Matter B and energy B, which you refer to as 'dark', do not interact with the gravitational field of A, including the black hole of A, which is the most intense gravitational field of A.
 
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wesspangle

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dark energy couldn't smooth a silk sheet if he had a hot date with a ........ god lost my train of thought
 
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